" If you are asserting that VSWR on a real or even theoretical line varies
sinudoidally with displacement, it is time to go back to basics. You need
some time with a reputable text book.

Owen

No, I am saying that a fixed length line, mismatched at the far end, and of
a different impedance to that of the generator, will not present a constant
vswr to the generator with varying frequency. That variation being
sinusoidal between a max and min value.

Jeff